Java tutorial
/** * Copyright (c) 2012 Todoroo Inc * * See the file "LICENSE" for the full license governing this code. */ package com.todoroo.astrid.actfm.sync; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.net.URLEncoder; import java.nio.charset.Charset; import java.security.NoSuchAlgorithmException; import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.TimeZone; import org.apache.commons.codec.digest.DigestUtils; import org.apache.http.HttpEntity; import org.apache.http.entity.mime.MultipartEntity; import org.apache.http.entity.mime.content.StringBody; import org.json.JSONException; import org.json.JSONObject; import android.text.TextUtils; import android.util.Log; import com.timsu.astrid.GCMIntentService; import com.timsu.astrid.R; import com.todoroo.andlib.service.Autowired; import com.todoroo.andlib.service.DependencyInjectionService; import com.todoroo.andlib.service.RestClient; import com.todoroo.andlib.utility.AndroidUtilities; import com.todoroo.andlib.utility.DateUtilities; import com.todoroo.andlib.utility.Pair; import com.todoroo.andlib.utility.Preferences; import com.todoroo.astrid.utility.Constants; @SuppressWarnings("nls") public class ActFmInvoker { /** NOTE: these values are development values & will not work on production */ private static final String URL = "//10.0.2.2:3000/api/"; private static final String APP_ID = "a4732a32859dbcd3e684331acd36432c"; private static final String APP_SECRET = "e389bfc82a0d932332f9a8bd8203735f"; public static final String PROVIDER_FACEBOOK = "facebook"; public static final String PROVIDER_GOOGLE = "google"; public static final String PROVIDER_PASSWORD = "password"; private static final int API_VERSION = 7; public static final boolean SYNC_DEBUG = Constants.DEBUG || true; @Autowired private RestClient restClient; private String token = null; // --- initialization, getters, setters /** * Create new api invoker service without a token */ public ActFmInvoker() { // DependencyInjectionService.getInstance().inject(this); } /** * Create new api invoker service with a token * @token access token */ public ActFmInvoker(String token) { this.token = token; DependencyInjectionService.getInstance().inject(this); } public String getToken() { return token; } // --- special method invocations /** * Authentication user with Act.fm server, returning a token */ public JSONObject authenticate(String email, String firstName, String lastName, String provider, String secret) throws ActFmServiceException, IOException { JSONObject result = invoke("user_signin", "email", email, "first_name", firstName, "last_name", lastName, "provider", provider, "secret", secret, "timezone", TimeZone.getDefault().getID()); try { token = result.getString("token"); } catch (JSONException e) { throw new IOException(e.toString()); } return result; } // --- invocation /** * Invokes API method using HTTP GET * * @param method * API method to invoke * @param getParameters * Name/Value pairs. Values will be URL encoded. * @return response object */ public JSONObject invoke(String method, Object... getParameters) throws IOException, ActFmServiceException { return invokeWithApi(null, method, getParameters); } /** * Invokes API method using HTTP GET * * @param method * API method to invoke * @param getParameters * Name/Value pairs. Values will be URL encoded. * @return response object */ public JSONObject invokeWithApi(String api, String method, Object... getParameters) throws IOException, ActFmServiceException { try { String request = createFetchUrl(api, method, getParameters); if (SYNC_DEBUG) Log.e("act-fm-invoke", request); String response = restClient.get(request); JSONObject object = new JSONObject(response); if (SYNC_DEBUG) AndroidUtilities.logJSONObject("act-fm-invoke-response", object); if (object.getString("status").equals("error")) throw new ActFmServiceException(object.getString("message"), object); return object; } catch (JSONException e) { throw new IOException(e.getMessage()); } catch (NoSuchAlgorithmException e) { throw new RuntimeException(e); } } /** * Invokes API method using HTTP POST * * @param method * API method to invoke * @param data * data to transmit * @param getParameters * Name/Value pairs. Values will be URL encoded. * @return response object */ public JSONObject post(String method, HttpEntity data, Object... getParameters) throws IOException, ActFmServiceException { try { String request = createFetchUrl(null, method, getParameters); if (SYNC_DEBUG) Log.e("act-fm-post", request); String response = restClient.post(request, data); JSONObject object = new JSONObject(response); if (SYNC_DEBUG) AndroidUtilities.logJSONObject("act-fm-post-response", object); if (object.getString("status").equals("error")) throw new ActFmServiceException(object.getString("message"), object); return object; } catch (JSONException e) { throw new IOException(e.getMessage()); } catch (NoSuchAlgorithmException e) { throw new RuntimeException(e); } } public JSONObject postSync(String data, MultipartEntity entity, boolean changesHappened, String tok) throws IOException, ActFmServiceException { try { String timeString = DateUtilities.timeToIso8601(DateUtilities.now(), true); Object[] params = { "token", tok, "data", data, "time", timeString }; if (changesHappened) { String gcm = Preferences.getStringValue(GCMIntentService.PREF_REGISTRATION); ActFmSyncThread.syncLog("Sending GCM token: " + gcm); if (!TextUtils.isEmpty(gcm)) { params = AndroidUtilities.addToArray(Object.class, params, "gcm", gcm); entity.addPart("gcm", new StringBody(gcm)); } } String request = createFetchUrl("api/" + API_VERSION, "synchronize", params); if (SYNC_DEBUG) Log.e("act-fm-post", request); Charset chars; try { chars = Charset.forName("UTF-8"); } catch (Exception e) { chars = null; } entity.addPart("token", new StringBody(tok)); entity.addPart("data", new StringBody(data, chars)); entity.addPart("time", new StringBody(timeString)); String response = restClient.post(request, entity); JSONObject object = new JSONObject(response); if (SYNC_DEBUG) AndroidUtilities.logJSONObject("act-fm-post-response", object); if (object.getString("status").equals("error")) throw new ActFmServiceException(object.getString("message"), object); return object; } catch (JSONException e) { throw new IOException(e.getMessage()); } catch (NoSuchAlgorithmException e) { throw new RuntimeException(e); } } /** * Creates a URL for invoking an HTTP GET/POST on the given method * @param method * @param getParameters * @return * @throws UnsupportedEncodingException * @throws NoSuchAlgorithmException */ private String createFetchUrl(String api, String method, Object... getParameters) throws UnsupportedEncodingException, NoSuchAlgorithmException { ArrayList<Pair<String, Object>> params = new ArrayList<Pair<String, Object>>(); for (int i = 0; i < getParameters.length; i += 2) { if (getParameters[i + 1] instanceof ArrayList) { ArrayList<?> list = (ArrayList<?>) getParameters[i + 1]; for (int j = 0; j < list.size(); j++) params.add(new Pair<String, Object>(getParameters[i].toString() + "[]", list.get(j))); } else params.add(new Pair<String, Object>(getParameters[i].toString(), getParameters[i + 1])); } params.add(new Pair<String, Object>("app_id", APP_ID)); boolean syncMethod = "synchronize".equals(method); if (!syncMethod) params.add(new Pair<String, Object>("time", System.currentTimeMillis() / 1000L)); if (token != null) { boolean foundTokenKey = false; for (Pair<String, Object> curr : params) { if (curr.getLeft().equals("token")) { foundTokenKey = true; break; } } if (!foundTokenKey) params.add(new Pair<String, Object>("token", token)); } Collections.sort(params, new Comparator<Pair<String, Object>>() { @Override public int compare(Pair<String, Object> object1, Pair<String, Object> object2) { int result = object1.getLeft().compareTo(object2.getLeft()); if (result == 0) return object1.getRight().toString().compareTo(object2.getRight().toString()); return result; } }); String url = URL; boolean customApi = false; if (api != null) { customApi = true; url = url.replace("api", api); } if (Preferences.getBoolean(R.string.actfm_https_key, false)) url = "https:" + url; else url = "http:" + url; StringBuilder requestBuilder = new StringBuilder(url); if (!customApi) requestBuilder.append(API_VERSION).append("/"); requestBuilder.append(method).append('?'); StringBuilder sigBuilder = new StringBuilder(method); for (Pair<String, Object> entry : params) { if (entry.getRight() == null) continue; String key = entry.getLeft(); String value = entry.getRight().toString(); String encoded = URLEncoder.encode(value, "UTF-8"); if (!syncMethod || "app_id".equals(key)) requestBuilder.append(key).append('=').append(encoded).append('&'); sigBuilder.append(key).append(value); } sigBuilder.append(APP_SECRET); String signature = DigestUtils.md5Hex(sigBuilder.toString()); requestBuilder.append("sig").append('=').append(signature); return requestBuilder.toString(); } }